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Which of the following statements is true about the electric double layer?

Option: 1

It is formed only in lyophilic colloids.
 


Option: 2

It is formed only in lyophobic colloids.
 


Option: 3

It is formed due to the attraction of the dispersed phase to the surface of the dispersed medium.

 


Option: 4

It is formed due to the repulsion of the dispersed phase to the surface of the dispersed medium.


Answers (1)

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Electric double layer is a layer of charges that forms around the surface of a colloidal particle in a solution. It is formed due to the attraction of the dispersed phase to the surface of the dispersed medium. The layer has two regions, the Stern layer (adsorbed layer) and the diffuse layer (mobile layer).

 

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